I got this thinking Supermodel would work, but for Scud Race and especially Daytona 2, they run at around 31-40 FPS. They are definitely playable, but I would love to see them run full speed.

I overclocked the GPU, since SM is GPU-dependant. That doesn't seem to improve frame-rate. Do I have to have some sort of OpenGL driver for the emulator? I also overclocked the PowerPC to 37 and 50 on the front-end, for Scud Race. Nothing improved.
BuriedEgg says he had no problem running it on the 220. Maybe his card is different from mine. My 220 is Asus-branded, I believe. Is that the problem?